Cultivating implement



2' Sheets-Sheet l Sept 20, l932- F. J. slEBENMANN 1,878,000

CULTIVATING IMPLEMENT Filed May 13, 1929 2 Sheets-Sheet 2 5y MTA/55 MMM, 0m QM QL/W W wrom/EY@ Patented Sept'. 20, 1932 A nUfNirEDsTA'rsis FREDERIC J. SIEBENMANN, or ivroLINE, ILLrNoIs, AssIcrNon'fro DEERE a COMPANY,

OF MOLINE, ILLINOIA CORPORATION 0F ILLINOIS cUL'rIvA'rING IMPLEMENT- Appiication mea May- 13,

This invention relates to improvements in that type ofl cultivating implement commonf ly referred to as a rotary hoe, such implements being usually characterized by two transversely extending shaftson which closely spacedV rotating hoewheels are mounted, the latter having long, radially extending teeth adapted to enter the soil in the forward rolling motion of the hoe wheels over the 1 ground. Such implements are frequently used in the cultivation of cornv and, like plants, having'particular utilitylfor breaking'up crusty soil in the'first or ysecond cultivating operations. y

The present invention is'concerned with the construction of a rotaryhoe of relatively wide span, as for cultivating three or more corn'` rows. A rotary hoe'of this'general type is illustrated and' describedin the application of Virgil F. Bozeman, filed February. 13;

.1928, Serial No.2253,835.` Machines ofrthis character have. lin thev past been `so eonstructed that the position of the rear sup'-v porting Wheels is definitely fixed Vwith yre` spect to the frameso that. such supporting wheels always track along the same'lines relatively to the frame. It has been found desirable to be able to displace or shift such wheels relatively to the framebecause sometimes the crop rows are so spaced that it is otherwise difcult or impossible to guide thev implement without one or the other of the rear supporting `wheels running over Vthe plants and breaking themY down. It has also been Vfound desirable tohave the rear' supporting wheels operate as caster wheels when the; implement is in working condition so that said wheels will be free to swing around any obstructions that maybe .encounteredfby them in traversing the field.. In this regard,`

however, ithas been found that while it is advantageous to have the rear supporting y wheels free to caster when the implement is in working condition in the field, such is-not desirable Whenthe implement is beingltransported from one place to another, in view of thefact that the implement is rather unwieldy if the rear Wheels are allowed to casteil' in' transportation, and accordingly it is neces'- alternative lateral position thereof; and

leze. seriai No. 362,587.

ylocked in position to prevent such castering movement'v when thelimplementis in trans'- port condition.

i Y 65 ,.7 A further ob] ect of. the-invention 1s to provide means for limiting the castering movementof the rear supporting wheels to prevent their coming into contact with the hoe wheels when castering.f Q. 4 AA still further object of the invention is to provide new and improved mechanism for raising andlowering the frame with respect to the rear supporting wheels, and also new and improved mechanism for raising and lowering the frame ywith respect to the front supporting wheel or wheels. Other Vobjects and advantagesof the invention willv appear in the following description of a preferred embodiment thereof. In the accompanying drawings illustrating such embodiment: l'

Fig. lis a fragmentary plan view illustrating the left hand side of the implement; Y F ig.k 2 is a cross-section taken on the" line 2,-2 of Fig. kl, and illustratingthe relation of the'parts when thehoe is inv working position; f,

Fig.v 3 is a side elevational view of the rear wheel support taken on the line 3 3 of Fig. l,

and` illustrating the relation fof the part-sf when thel hoe is in transport position; y Y F ig. 4 is a sectionalfview taken on the line,

of Fig. 2, illustrating in dotted lines one i extreme castei'ing positionof'one of therear wheelsyn. ,y y. Fig. 5 is anenlarged fragmentary top viewl ofone of the rear wheel supports illustrating in full lines the normal central position of the f,

rear supporting wheel, and in kdotted lines'an Y to the horizontal flanges of the transverse* frame-bars 8,Y 9.V Thel endportions ofithetransverse bars 8,9 are joinedtogetherfat-` the sides of the frame by laterally spaced pairs of angle bars 12 and 13 which are also bolted or otherwise secured to the horizontal flanges of the angle bars 8; 9.|` Fig.` 1 only illustrates the lateral frame bars 12,Y 13 at the' left'h'and side of the implement, butTit will be understood vthatthis arrangement of lateralfframe bars is Aalso `duplicated at'the righthand lside of' the'frame. The lateral frames bars :12, 13 are extendedrearwardly beyond AVthe frame bar. 9"a`s indicated at '12', 13", for a lpurpose hereinafter described.

The longitudinally extending'central frame barr11 extends forwardly fromI the transverse frame bar'S and has a casting 14 secured to its front end, whichV provides suitable mounting ofsuch frame' bar on' a tongue truck' to be described later; Thel-front'portion of the outermost lateralframe bar12zisbcnt in-` w wardly toward the center of the implement,

Y as indicatedl fat'15, the'frontend of this diagonal` portion'being bolted lto the casting 14, as indicatedv at 16; Thefront endof the in.- ner lateral fram'ebarll?) is bolted or otherwise secured at 17 toa bracket .18 which is secured to the inner side of the-'diagonal frame bar 15. The diagonal'frame barportions` 15 on each side ofthe implement'serve'to brace the main frame against lateral or twisting distortion;4 A suitable spring scat support carrying a driversseat '10 .is mounted on the 'Icentral'frame bar 11,' and ai foot rest20 is also provided on the bar'11, as shownin'Fig. 1.

Thespecific construction ofthe sub-frames whichv 'carry the "rotary hoe wheels Ahas 110th-,

Serial No;V 253,835, only a brief description thereofwill be. hereingiven. These sub'-` frames VAare indicatedby they .reference numer'alsf19a", 191, and .each' comprises' transverselyY extending'front and rear angle bars" points 'by' boards 23 which have their ends bolted' orotherwise' secured to the horizontalA flangesy ofithe angle bars 21, 22;" Rigidly `secured"toand vdepending from the opposite ends of the bars 21, 22.are U-shapled side'baIS lLl 24" (seel Fig.j2)', which side barsv 24 support frontandfrear shafts 25, 26, each" pair ofi` front andrear `shafts beingindividual to its j respective' sub-frame.A The rotaryj hoes, in-` dicated by the numeral 27, consist of wheels having long pointed teeth adapted to penetrate the soil with a rolling motion in the forward travel of the implement. A plurality of these hoe wheels 27 are loosely mounted on each of the shafts 25, 26, and are so arranged on said shafts that the wheelsofione series are disposedin staggered or oEset relation with respect to the wheels ofthe other series,

andthe two-"series-Kof wheels overlap each other transversely ofthe-implement. The mounting of these hoe wheels is fully illustratedand described in the above mentioned Bozeman application.

Each-sub-frame is pivotally supported von the main frame for transverse rocking movement 'about a longitudinally` eXtendingpivot shaft28' which' is' mounted on the outer' endof the mainframe, preferably' between 'the lateralframe bars 12,13'. The front and rear ends of theshaft 28 are carried in brackthat a flexible relation.` is establishedbetweenthe hoewheels at oppositesidesof the imple-- ment. It maybe-mentioned,I also, that-each sub-frame is pivotallysupported in an unha-14 ancedwrelation on; themain framev with one end heavier than the other,and` there is provided vholding means which lis .operable j to prevent the heavy end of thesub-,frame fromA rocking downwardly' into engagement Vwith the' ground when the: main frame' is lifted to` transportfposition. The sub-frames may be arranged sof that either end has the-excess of Weight, butin thefconstructon illustrated I have shown thepivot axis disposed closer to the inner end of thef-sub-frame so that the outer end thereof will have `suchexcess of:

weight, and I provide' a bar 32 pivotally mounted' intermediate its ends onV thel central l framebar 11,'so that said bar 32 can beturned to a transverse position, which is that'shown in Fig. 1, in which position its two` arms Verr-- tend 'overthe' ends ofthe two sub-frames forV limiting the upward swinging movement of these ends of the sub-frames. By turning the bar substantially into parallelism with the frame Abar 11, the innerends of the subframes are free to rise and fall through aQconsiderable angle in 'the ycultivating travel of the hoe wheels over unevenground, all of which lis more fully described in the above mentioned Bozeman application.

`Each of the sub-frames 1905, 195 is suitably braced ata point below the pivot axis 28 and [falso at ,the inner end of the sub-frame-fby vbrace bars 33 connected at their opposite ends 9 vof the Emain frame by means of a bolt 37 1 a 'vertical bearing for a spindle 44 upon theV lower end of which the rear supporting wheel `to'thefront and rear; angle bars 21, v22, as

shownin Fig. 1. Secured tofeach ofthe brace bars33 by bolts '34'nl are a pair of vdownwardlyY extending' members 34, one located 'adjacent "to eachendofeach brace bar 33, -see Figs. 1 and2, said members each being provided adjacent to its lower end with a suitable bearing hole for the reception of the shaft or the shaft 26 as thecase may be, said members 34 thus serving as central and inner end supports for said shafts.

The rear wheel support comprises al suitable arm in the form of a casting 36-which at itsfront end is pivotally mounted' on the horizontal ange of the rear transverse bar which i' passes through theubraoket 29 andthe pivot shaft 28. .v Sai-d b`olt,therefore, serves tov hold boththe front end of the casting 36 and the pivot shaft 28" in position. A U-shaped member orplate 3,8 is secured to the rearwardly extending portions 12', 13 of lthe lateral frame bars 12, 13 by bolts 39, and extends rearwardly therefroniasshown in Figs. 1 and. TheU-shaped platef38 is provided with a series of holes 41 which are positioned in an arc of va circle whose center isat th-e center .of the bolt 37, and thearm or casting 36 -is adaptedkto bereleasably secured to the .U-shaped member'38fin different angular positions 'by means of a 'bolt 42' which is passed through said v`casting and one of the holes 41 provided in said U-shaped plate.` vIt will thus be seen that the casting 36 may be placed in any one ofl av number of angular positions, andwhile in the drawings `I have shown five'of such positions any desired number may be provided. In Fig. 5 I haveV shown thev rear wheel and its supportjin full lines in its normal position, and 'in dotted lines I have shown it in one of the lateral positions'in which it may be setyby means of the parts just describe y i rlhe rear Vportion of the'casting 36 is in the form-of a vertical sleeve 43 which `provides 45,is journaled'. The upper end of the spindle 44 is provided with a shoulder 46 upon which rests supporting member or cap in the form of a casting 47 ,said casting being held in position ontheupper end of the spindle 44 by means of a washer 48 and nut 49 screwing down over the upper threaded endy of the spindle 44, as shownY in'F ig. 6. depth controlscrew shaft 51 is journaled in a lug 52 extending laterally from theupper end of the supporting member 47, said screw shaft being providedwith a crank; handle portion 51 for operating the same. The vertical sleeve portion 43 of the casting 36 is V53 which extend laterally from Vsaid sleeve portion in alinement with the laterally eX- tending lug52 off the casting 47. .A nut 54 is'positioned non-rotatably between the lugs 53, and the Vthreaded portionY of the Hscrew shaft 51 threadsthrough said nut, as shown in Fig. 6. A collar 55 is pinned 'on the-screw shaft 51 .below the lug 52 to hold it in posi- .tion in its bearing in the casting 47. v Adjustably mounted o-n the spindle 44 between the casting 47 and the vertical sleeve portion 43`of the casting-36 is another casting inthe form of a plate 56 which is held in position by a set screw 57, said plate 56 being yprovided with two parallel depending lianges 58 on itsflower side which are adapted to .provided with two spaced perforated lugs embrace `'two parallel faces 59 provided on t ie upper end` of thesleeve 43, whenthe hoe is raised to transportposition'with theparts lin lthe position shown in Fig. 3. V.By thisari (see Figs. 3 and 5) whichprojectoutwardly therefrom suiiicientlyv to strike thecrank screw 51 as the spindle 44 is .turned in either direction by the castering of the wheel 45,

as shown in Fig. 4.' vIt will` thus be seen' that by this arrangement the wheel is limited inits castering movement by the ears 61 on the plate 56, so'that said wheel will not strike the rear rotary hoes. The dotted line posi'-v tion of the supporting wheelfshown in Fig. 4 illustrates one'of these end positions limited by the stopsy 61. In this connection it should be explained that the plate 56 should preferably be positioned onthe spindle 44 vso that the wheel 45 may'caster approximately the same amount in either direction. Therefore,

as the position of the rarm 36 is shifted on the U-shaped member 38 as above described,Y the Aposition of the ciastingor plate 56 should be changed accordingly. It willbe correctly positioned if, when the caster wheel ispar-v allel to the line of advance, a line drawn throughthel two opposite Vears 61 is parallel to the center line of the arm or casting `36. When so positioned the spindle 44 will be permitted to swing to about the same extent in either direction. Fig. 1 only illustratesthe rear supporting wheel at the left hand side of the implement, but it will be `understood that asimilar wheelV having the same mounting and cooperating stops is hand side of theframe. y

lFrom theforegoing description it willbe seen that when it is desired to adjust eitherl provided at the right or both of the two rear supportingzwheels" laterally to vprevent theirL running over and breaking down the plants, this may be accomwhich-the armv36 can be moved in either dizrection on the plate l38 to the position'desired, and the hole in the-arm 86 through which the bolt 42 passes isthen aline-d with the proper hole in the Ushaped member88, after which the bolt 42 is again placed in position andit and the bolt 37 are tightened up. At the same time the set screw 57 is loosened and the castingor plate 56V is adjusted to the proper Aposition as `above described,- so that the ears 161 will permit the castering of the wheel 45 to the same extent in either direction, and will also prevent such castering movement from continuing too far in either direction, so that the wheel 45 will not strike the hoe wheels, as abovementioned. Such adjust-V ment of'the plate 56 Valso disposes the shoulders 5'8 `where they will embrace the faces 59 for holding the supporting wheel tracking straight ahead when the frameis raised to transport position.

The `rear end of the implement is raised and lowered byV means of the screw shafts 51 provided on .each rear wheel support. Fig. 2 shows the position of the parts when the hoe Wheels are in` operating position, and when in suchrposition therear wheels 45 have castering movement to a limited extent, as above described. When it is desired to raise the hoe wh-ee'lsto transport position the operator `turns the screw crank 51 of each of thewheel supports in the proper direction toraise the nut 54 and sleeve 48 upwardly along the wheel standard 44,` and when the pants have reached the proper position for transport the plate 56 will engage 4on the top ofthe .sleeve 48 and the two parallel depending flanges 58-of 'said plate willl embrace theV two parallel faces 59 provided -onthe upper end `'of ysaid sleeve, thereby locking the spindle 44 against turning in its bearingso that the wheel is held against castering. l/Vhen `it is desired to lower the hoe wheels to opneck yoke of the team, and also to provide forv raising and lowering the front end of the implcment relatively to the ground in the raisand into operative position. 60.1

ing and lowering of the hoe wheels out lof Referring to Figs. 1 and 2, such tongue truck preferably comprises a vertical standard 64, the lower end of which lis secured in an inverted T- Shaped bea-ring bracket-65. Extending horizontally through ,this bracket is an axle 66 on outer ends of which the two truck wheels 67 are jouriialed. ACl'ishaped bar 168 iiig 14, by bolts 71., asshown in Fig.V 2. Draft 0 is transmitted to the implement throu-gh'a `draft clevis 72 which is `coupled .at 7 3 tothe bar 68,' the latter beingV provided with a plurality of` vertically spaced holes forv receiv.

the coupling pin 78V in order4 that the poi-nt of draft hitch may be raisedV or; lowered relative to the implement., asshown in said figure.v The vertical :sleeve portion 74 of the casting 14V has slidable and. rotatable bearing engagement on the `standard '64. Mounted on said standard .and resting on the top of the upper arm of the C-shaped bar 6 2 is a .sleeve 7,5. This .ysleevef75 also V'has ro-k tatable movement upon the vstandard 64. Tull-he frontend ofthe limplement frame is caused to move upwardly and downwardly along the standard 64 by means which will be presently described. Y

' he draft tongue 63 vhas a bracket 76 se?l cured to its rear end, which bracket is pivotally connecte-d at 7 7 to the laterally bent upper end of the' standard 64.. The bracket 76 is forked to provide laterally spaced hub portions 78 engaging-.over the pivot'. arm )77 the hub portions being held onthe pivot arm by a collar 79 which is secured to the pivot arm between the hubs, as shown in Fig. V1.

Pivotally mounted at its lower end onV a bracket 81 secured to the longitudinal frame bar 1-1 is a link 82, and pivotally mounted .at 83 10B on the upper end of said link is avfcomparatively long lever 84 which comprises. two

spaced substantially parallel bars 84a,.'847).

The'forward end of the lever 84 is pivotally connected to the-sleeve 75 lat 75. S'Suitably los secured to the foot rest L20 andextending up'- member 85 provided with substantially parallel forked arms at its upper end ias shown in Fig. 1, and .between these-forked .arms is pivoted a bearing 86 for a crank-screw 87 provided at its upper end with a hand-le portion 88 :and at its lowerend with a screw-threaded portion 89, asl shownin Fig.,2. Tfliecrank screw 87 is rotatably held against endwise 1,15 shifting in the .bearing86 by means of .collars 91, 92 pinned to the crank screw on opposite sides of the bearing. The supporting member 85 is suitablyl bracedby brace bars 93, 94, secured at their upper ends to the member 85 adjacent to the bearing 86, their lower ends being bolted to thefront transverse anglev` bar 8, as shown. rllhreaded on the-screwthreaded portion 89 of the crank screw 87 is a traveling nut 95, said nut being pivotally secured to the rear end of the long lever 84 between the spaced bars 84a, 846 thereof, se that as said nut travels up or down on the crank screw 87 it will move the rear end of the pivoted lever 84 .-correspondingly, there-- 130 various parts when'the hoe wheels are in oper.A

ative position, and Iif it is desired'to'raise the A A,frame so as to bring the hoewheels into trans- Tort position thefrontend of said frame is raisedv by turningtheycrank 87 in the proper direction to cause the traveling nut 95 to move upwardlyon the threaded lower end 89 of" the crank screw; Thismoves the rear end of 'the' long link orflever 84'upwardly,'and by reason of its pivotal connection about lmidway of its length on the upwardly extending link 82 the-forward end of the link 84 exerts down- ,.ward pressure on vthe sleeve 75, which, owingV lJtoitsresting on the -upper arm of the VC- shaped Ebar 68 is' prevented from Vmoving downwardly, and, therefore, the `frame is moved upwardly, the casting 14'smov'ing up'- wardly along the standard 64, as will be readi- ""ly understood. To lower the front portion of the frame the operator merely turns the screwA crank in the opposite direction.- The raising and lowering of the rear portionof the frameA i relatively to the rear supporting-wheels 4:5 has """been previously described. If the ground be'- Y ing cultivated is' relatively hard it may be desirable to impose the added .weight of these rear-supporting wheels o-n the points of the hoe wheels, and such iseifected by adjusting 5" -the screw cranks 5l to raise such supporting wheels out ofcontact with the ground.` l- I claim: i Y 1. In a `rotary hoe, thecombination of a lframe, a Icaster wheelffor supporting ysaid 40 "frame, means for adjusting the vertical position of said yframe relatively to said caster wheel between operative and-transport positions,.and means' for holding said wheel import position. Y

2;-In-a rotaryhoe, the .combination of a frame, a caster wheel ,for supporting said framemeans connecting said wheel with said frame .permitting the castering axis of said 5@""wheel tobe shifted relatively to said frame, means fon-raising vand loweringsaid frame relatively to said caster wheel between trans- `eration of saidfscrew shafts for locking said l.

port and operative positions, and ymeans actuated by the raising movement of the frame 5" for locking saidwheel against castering when the frame` is raised, to transport position.A

3. In .a rotary hoe, the combination of Ma frame, a supporting wheel for the rear por- .v tion of said frame, meanslpermitting casters 0 "ing of said supportingwheel when said hoe is moving forwardly in operating position, and adjustable means for limiting the castering movement of said wheel after'it has swung4 laterally a predetermined amount'.

6th In @rotary hoe, the combination of a relativeto each of said ,laterally spaced 1150" adjacent the opposite ends thereof, a plate connecting the rear ends of each Vpair of lat l against castering when the frame is trans- "sides thereof and extending'rearwardly there-v fro1n,a caster wheel mounted on each of said arms, means .for'securing said arms in different angular positions relativelyto said '86 frame` to change the spacing b-etweensaid" caster wheels,and means for adjusting said frame vertically relatively to said caster wheels. i f if a' 6. In a rotary hoe implement', the combina-y 85 tion ofl-a iframe comprising transverse frame bars,rotary hoe wheels carried by said frame, a pair of lateral frame bars extending rearwardly beyond said transverse frame bars eral frame bars, anfarm pivotally mounted on one of said transverse frame bars and "ex-y tending rearwardly between said lateral4A frame bars, al supporting wheel 'connected with each of said arms, and means: for-rerleasably connecting said arm with said plateA in any one of a number of laterally adjusted positions whereby said supporting wheels t may be adjusted laterally. Y .109

7. In a rotary'hoe,1 the combination of a frame, a pluralitv of hoe wheels carried by said frame, a pair of caster wheels connected` Y with said 4frame adjacent tol theouter. sides Y. thereof and extending rearwardly therefrom,

-means for securing said casterwheels in different lateral positionswithrespect to said frame, and upwardly extending screw shafts operatively connected with said caster wheels and said frame for adjusting said frame vertically relatively to said caster wheels.``

8. In a rotary hoe implement; the combination of a frame, hoe Wheels carried by said 'f frame7 caster wheels supporting the rear-'portion of said frame,'s`crew shafts for 'raising and lowering said frame relative to said caster wheels, and means made operative by the op`-.

wheels against castering raised. i

9. In a rotary hoe implement, the combina'- tion of a frame, a tongue truck supporting the front portion of said frame, a screw shaft operatively connected forj raising and lower'.-` ing said frame relative to said tonguetruok, a pair of vlaterally spaced wheels support'- ing the rear portion of said frame, a screwvn; shaft for raising vand lowering said frame i.

when the -frame is 69:2" risinfrtwo vcoo eratin0` connectin members `wheels?.and-ineansY for laterally adjusting` binaton-i of La frame, laterally y spaced wheels fsupporting Vtherear portionof said frame,

means .for raisinghand lowering said frame relative to said wheels, a tongue truck supporting the forward portionof said frame, said ton-gue trucky comprising a wheel sup- -ported standard., a draft clevis secured to said standard,aa.sleeve mounted on said standard,V and alscrew-sliaft swiveled tosaid frame and oonneotedrwthl'said sleeve for movingtlie samegvertically onsaidv standard to-raise and r.=lowe1% said i frame relative.- tosaid tongne truck, and to said draft rolevis. Y

ll.: In a rotary i hoe-1 implement@ the: combination offra frame,-.lioe=wlieels`carried byV said frame, laterally spaced wheels support-` ing; ,fthefrean ,portion of lsaid frame, a l-longfitudiiialrlyf.v extendingvrv frame -barw comprising l theffront portion ofV said, frame,- a tongue truelensupporting fthe forward end of vsaid frame ban,-f,saidftongne truck comprising a `wheely supported standard,lmeans for raising-` andfloWeri-ng saidfframe bar along said standandfslaldfmeans comprising-a sleevemounted intermediateportons of` saidL lever, screw shaft' operatively connected witli the vopposite* the :inain:frame,v lmeans for raising and low-- erig; the front :portion of the main frame relatively -to :said front supp ortinggwheel,flat-y erallyispaced-,caster wheels forthe rear por:V `tion'zofsaixilvanainframe,` means for raising-v and lowei'rngisaid mainfframe relatively i to sai d: ,icasiterzwheelm i means` for :adjustingfs aid caster wheels laterally; .meansy for i limiting.V thecasteringimovement of said caster wheels` 'wliensaidI vmaine frame as lowered and: means.:

fonlockingsaid caster wheels against casteringgyvhen said main` frame -is raised. fs

13.;Inar.rotary lioefimplement, ,the com.

binationof a frame, aplurality of. rotary lioe melements carried by said f frame,` laterally spaciedawheels supporting the main portio`n of saidframe, a dirig-ble tongue truck for th f '.d t" f L Supportmg e Orwm por lon O Smd portingftlie-front portion of"sa1d,` frame,

frame, said frame andfitongnetruck-comca-pab'le of relative vertical' movement, mech? anismz-fdr-rais-ing and 'loweringrrthe forward portion offfsaidframe relatively'` to ,'saidv;- tongueftruek comprisingathreaded sliaft,i a.; traveling nutI on .said vsl`iaft,1means connecting frame, aasleeve mounted ony vsaid fframeeV a spindle mounted-:mysaid sleeveyalcas-ter wheel@ Y said frame; V for;l adjusting.` said frame-verf` saidv frame, relative ltoesaid laterally spaced,

wheels. i

14.v In arotarylioe; the combination -ofamf mountedv on, said' spindle;y ayserewasliaft op@r eratively `connected Jwitlif. saidy f spindle and fu# ticallyfrelatively'- to said Veaster., wheel-,vl and- :afstop 4member adjustably connected #tot said spindle, said stop member havinge lateral-ly extendingfearsadapted -to engage:thefserew shaft toflimit thecastering movement ofsaid.l mi?,

wheel, and' also-1` liavingq depending; flanges adaptedl to embrace-the topf imaizgin A,of i'saidiA sleeve :to-:lookfsaid wheelagainst:Y caster-*ingry i 15a-.In a ,rotary hoe,` ,the combination-fofaf` frame,- hoe wheels! -cairiedfbyaid frame;-V a@ e caste'rfA wheel for supporting 1 salda:fiamef:1 means y for adjustiin-g-,V said framevertinalliy relatively to said :caster wheel= to vmove zsaidnv 1 lioe: wheels finto and out of operative :positiom'avww a spindle :on which said; easter `wheelisK :mount-f. ed;l sleeve f in ewhic-lry isaidvspindle* :hasn-row Y 1 tatable and 'longitud-inal :sliding-2 movements on --saidfstandard-,; a y lever pivotally-connected i ati onenend witlifsaid sleeve,; a link pivotally` 'connectedzwitlr saidfraine bai' and xwith the andfstop, devicesl carriedb zsaid-.spindle andy ,i by. isaid sleeve J'and ,adapted to abev spacednflonr-l ,gitiidinallyfA fromv feacliirotl'ieiw` when. Itlief hoer wheels e are in!A operative eposition,A said` stopfy devices being-adapted to loemovedlongtndfi nally into' f locking en-gagementr with; l eaclizr other when the ihoefrwheelszare in:inoperativeL position.; Y

16. In.:afirotaryfhoefiimplement,5 the com@V` bination o-f a frame, lioe wheels carriedmbl said frameifcaster: iwheelsfsnpporting the rear por-tionof said frame; means for arai-sing;and'e5 loweri'ngaid.` frame f relative to sai df-:caster f wheels, and; means made operative.ibyz-fvtliea` operatoni offsaid lirstf'` mentioned-i, me ans a for i: looking said wheels.- agaistscasteringowlien 5, theframe isf-raised.; e. Y

17. In a rotary\ lioe implemenqtheeco-mebinalnionnof a; frame, aitongueztrnck support'- ingnthe fiontipoittiongofxtsaid frame, aV screw sliait4 operatively connected for raising =andxf lowering said frame relativefto .said :tonguetruokgva pair; of laterally-spacedtvv/heels sup-i e115@ porting thezrearportioni of` saidi fram'e3r=means 1 for independently-raising and lowering said-`- frame` relative tof eaeli'.` of` sai'dfl laterally Y spaced wheels, andi-means@ fdr-later ally 'ade 1201 means-operatively connected Vfor raisingy and "125ej lowering Asaid frame. relative to said tongue truck, a xpaiiof: laterally y.spacedfvvlieels supporti-ngtlie rear, portionotrs'aidfr'ame, means s for independently raisingqand 'lowering gsaid frame relative y toeach of Said-@laterally 1301 Ttous:

spaced wheels, and means for laterally adalong said brackets for disposing said wheels .justing the position of said wheels.

19. In a rotary hoe, the combination of a frame, a sleeve mounted on saidc frame, a

- adjustment of said arms.

spindle mounted in said sleeve, a caster wheel mounted on said spindle, adjusting means connected with said spindle and said frame for moving said` frame vertically relatively to said caster wheel, and a stop member' ad-V justably connected to said spindle, said stop member having laterally extending ears adapted to engage said adjusting means to limit the castering movement of said wheel and also having depending flanges adapted to embrace the top. margin of said sleeve to' look said wheels against castering.-

20. In a rotary hoe implement, the combination of-a frame, hoe wheels carriedby said frame, caster wheels supporting the rear portion of said frame, means `for raising and in laterally adjusted position. Y

In witness whereof, I hereunto subscribe my name this 30th day of April, 1929.

FREDERIC J. SIEBENMANN.

lowering said frame relative tosaid caster wheels, and means ma'de operative by the operation of said first mentionedvmeans for locking said wheels against caste-ring when the frame is raised, said last mentioned means being adjustable to vary the position of the caster wheels relative to the frame when they are locked. Y

21. In a rotary hoe implement, the combination of a frame, hoe wheels carriedby said frame, a pair of arms pivotally connected with said frame, a caster wheel mounted o-n each of said arms, means Jfor raising and lowering said frame relative to said caster wheels, and means for locking said Wheels against oastering when the frame is raised, said last mentioned means being adjustable to vary the position of the caster wheels relative to the arms in which they are locked so as to cause said caster wheelsl to be locked in the same position with respect to the frame regardless of the position of 22. In a rotary hoe implement, the combination of a frame, la pair of laterally j spaced longitudinally extending arms piv- Vals otally connected on vertical axes with the frame to swing transversely in a horizontal plane, supporting wheels carried by said laterally spaced arms, means for independently raising and lowering said frame relative to said supporting wheels, and means for securing the wheels in laterally adjusted position. j

23. In a rotary hoe implement, the combination of a `frame, a tongue truck supporting the front portion vof said frame, means Y Y carried by the frame and operatively con-v nected for raising and lowering said frame relative to said tongue truck, brackets carried by the rear portion of said frame, supporting wheels for the frame, means for raising and loweringV the frame relatively tof said g if ywheels, and wheel carrying means movable i 

